/*
 Copyright (c) 2012-2014 Open Lab
 Written by Roberto Bicchierai and Silvia Chelazzi http://roberto.open-lab.com
 Permission is hereby granted, free of charge, to any person obtaining
 a copy of this software and associated documentation files (the
 "Software"), to deal in the Software without restriction, including
 without limitation the rights to use, copy, modify, merge, publish,
 distribute, sublicense, and/or sell copies of the Software, and to
 permit persons to whom the Software is furnished to do so, subject to
 the following conditions:

 The above copyright notice and this permission notice shall be
 included in all copies or substantial portions of the Software.

 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
function GridEditor(master) {
    this.master = master; // is the a GantEditor instance
    this.gridified = $.gridify($.JST.createFromTemplate({}, "TASKSEDITHEAD"));
    this.element = this.gridified.find(".gdfTable").eq(1);
}

GridEditor.prototype.fillEmptyLines = function () {
    var factory = new TaskFactory();

    //console.debug("GridEditor.fillEmptyLines");
    var rowsToAdd = 30 - this.element.find(".taskEditRow").size();

    //fill with empty lines
    for (var i = 0; i < rowsToAdd; i++) {
        var emptyRow = $.JST.createFromTemplate({}, "TASKEMPTYROW");
        //debugger;
        //click on empty row create a task and fill above
        var master = this.master;
        emptyRow.click(function (ev) {
            var emptyRow = $(this);
            //add on the first empty row only
            if (!master.canWrite || emptyRow.prevAll(".emptyRow").size() > 0)
                return

            master.beginTransaction();
            var lastTask;
            var start = new Date().getTime();
            var level = 0;
            if (master.tasks[0]) {
                start = master.tasks[0].start;
                level = master.tasks[0].level + 1;
            }

            //fill all empty previouses
            emptyRow.prevAll(".emptyRow").andSelf().each(function () {
                var ch = factory.build("tmp_fk" + new Date().getTime(), "", "", level, start, 1);
                var task = master.addTask(ch);
                lastTask = ch;
            });
            master.endTransaction();
            lastTask.rowElement.click();
            lastTask.rowElement.find("[name=name]").focus()//focus to "name" input
              .blur(function () { //if name not inserted -> undo -> remove just added lines
                  var imp = $(this);
                  if (imp.val() == "") {
                      lastTask.name = "Task " + (lastTask.getRow() + 1);
                      imp.val(lastTask.name);
                  }
              });
        });
        this.element.append(emptyRow);
    }
};

GridEditor.prototype.addTask = function (task, row, hideIfParentCollapsed) {
    //console.debug("GridEditor.addTask",task,row);
    //var prof = new Profiler("editorAddTaskHtml");

    //remove extisting row
    this.element.find("[taskId=" + task.id + "]").remove();

    var taskRow = $.JST.createFromTemplate(task, "TASKROW");
    //save row element on task
    task.rowElement = taskRow;

    this.bindRowEvents(task, taskRow);

    if (typeof (row) != "number") {
        var emptyRow = this.element.find(".emptyRow:first"); //tries to fill an empty row
        if (emptyRow.size() > 0)
            emptyRow.replaceWith(taskRow);
        else
            this.element.append(taskRow);
    } else {
        var tr = this.element.find("tr.taskEditRow").eq(row);
        if (tr.size() > 0) {
            tr.before(taskRow);
        } else {
            this.element.append(taskRow);
        }
    }
    this.element.find(".taskRowIndex").each(function (i, el) {
        $(el).html(i + 1);
    });
    //prof.stop();

    //[expand]
    if (hideIfParentCollapsed) {
        if (task.collapsed) taskRow.find(".exp-controller").removeClass('exp');
        var collapsedDescendant = this.master.getCollapsedDescendant();
        if (collapsedDescendant.indexOf(task) >= 0) taskRow.hide();
    }

    return taskRow;
};

GridEditor.prototype.refreshExpandStatus = function (task) {
    if (!task) return;
    //[expand]
    var child = task.getChildren();
    if (child.length > 0 && task.rowElement.has(".expcoll").length == 0) {
        task.rowElement.find(".exp-controller").addClass('expcoll exp');
    }
    else if (child.length == 0 && task.rowElement.has(".expcoll").length > 0) {
        task.rowElement.find(".exp-controller").removeClass('expcoll exp');
    }

    var par = task.getParent();
    if (par && par.rowElement.has(".expcoll").length == 0) {
        par.rowElement.find(".exp-controller").addClass('expcoll exp');
    }
}

GridEditor.prototype.refreshTaskRow = function (task) {
    //console.debug("refreshTaskRow")
    //var profiler = new Profiler("editorRefreshTaskRow");
    var row = task.rowElement;

    row.find(".taskRowIndex").html(task.getRow() + 1);
    row.find(".indentCell").css("padding-left", task.level * 16 + 12);
    row.find("[name=name]").val(task.name);
    row.find("[name=code]").val(task.code);
    row.find("[status]").attr("status", task.status);

    row.find("[name=duration]").val(task.duration);
    row.find("[name=start]").val(new Date(task.start).format()).updateOldValue(); // called on dates only because for other field is called on focus event
    row.find("[name=end]").val(new Date(task.end).format()).updateOldValue();
    row.find("[name=depends]").val(task.depends);
    row.find(".taskAssigs").html(task.getAssigsString());

    //profiler.stop();
};

GridEditor.prototype.redraw = function () {
    for (var i = 0; i < this.master.tasks.length; i++) {
        this.refreshTaskRow(this.master.tasks[i]);
    }
};

GridEditor.prototype.reset = function () {
    this.element.find("[taskId]").remove();
};

GridEditor.prototype.bindRowEvents = function (task, taskRow) {
    var self = this;
    //console.debug("bindRowEvents",this,this.master,this.master.canWrite, task.canWrite);
    if (this.master.canWrite && task.canWrite) {
        self.bindRowInputEvents(task, taskRow);
    } else { //cannot write: disable input
        taskRow.find("input").attr("readonly", true);
    }

    self.bindRowExpandEvents(task, taskRow);

    taskRow.find(".edit").click(function () { self.openFullEditor(task, taskRow) });
};

GridEditor.prototype.bindRowExpandEvents = function (task, taskRow) {
    var self = this;
    //expand collapse
    taskRow.find(".exp-controller").click(function () {
        //expand?
        var el = $(this);
        var taskId = el.closest("[taskId]").attr("taskId");
        var task = self.master.getTask(taskId);
        var descs = task.getDescendant();
        el.toggleClass('exp');
        task.collapsed = !el.is(".exp");
        var collapsedDescendant = self.master.getCollapsedDescendant();

        if (el.is(".exp")) {
            for (var i = 0; i < descs.length; i++) {
                var childTask = descs[i];
                if (collapsedDescendant.indexOf(childTask) >= 0) continue;
                childTask.rowElement.show();
            }
        } else {
            for (var i = 0; i < descs.length; i++)
                descs[i].rowElement.hide();
        }
        self.master.gantt.refreshGantt();
    });
}

GridEditor.prototype.bindRowInputEvents = function (task, taskRow) {
    var self = this;

    //bind dateField on dates
    taskRow.find(".date").each(function () {
        var el = $(this);

        //start is readonly in case of deps
        if (task.depends && el.attr("name") == "start") {
            el.attr("readonly", "true");
        } else {
            el.removeAttr("readonly");
        }

        el.click(function () {
            var inp = $(this);
            inp.dateField({
                inputField: el
            });
        });

        el.blur(function (date) {
            var inp = $(this);
            if (inp.isValueChanged()) {
                if (!Date.isValid(inp.val())) {
                    alert(GanttMaster.messages["INVALID_DATE_FORMAT"]);
                    inp.val(inp.getOldValue());
                } else {
                    var date = Date.parseString(inp.val());
                    var row = inp.closest("tr");
                    var taskId = row.attr("taskId");
                    var task = self.master.getTask(taskId);
                    var lstart = task.start;
                    var lend = task.end;

                    if (inp.attr("name") == "start") {
                        lstart = date.getTime();
                        if (lstart >= lend) {
                            var endAsDate = new Date(lstart);
                            lend = endAsDate.add('d', task.duration).getTime();
                        }

                        //update task from editor
                        self.master.beginTransaction();
                        self.master.moveTask(task, lstart);
                        self.master.endTransaction();
                    } else {
                        lend = date.getTime();
                        if (lstart >= lend) {
                            lend = lstart;
                        }
                        lend = lend + 3600000 * 20; // this 20 hours are mandatory to reach the correct day end (snap to grid)

                        //update task from editor
                        self.master.beginTransaction();
                        self.master.changeTaskDates(task, lstart, lend);
                        self.master.endTransaction();
                    }

                    inp.updateOldValue(); //in order to avoid multiple call if nothing changed
                }
            }
        });
    });

    //binding on blur for task update (date exluded as click on calendar blur and then focus, so will always return false, its called refreshing the task row)
    taskRow.find("input:not(.date)").focus(function () {
        $(this).updateOldValue();
    }).blur(function () {
        var el = $(this);
        if (el.isValueChanged()) {
            var row = el.closest("tr");
            var taskId = row.attr("taskId");

            var task = self.master.getTask(taskId);

            //update task from editor
            var field = el.attr("name");

            self.master.beginTransaction();

            if (field == "depends") {
                var oldDeps = task.depends;
                task.depends = el.val();

                //start is readonly in case of deps
                if (task.depends) {
                    row.find("[name=start]").attr("readonly", "true");
                } else {
                    row.find("[name=start]").removeAttr("readonly");
                }

                // update links
                var linkOK = self.master.updateLinks(task);
                if (linkOK) {
                    //synchronize status from superiors states
                    var sups = task.getSuperiors();
                    for (var i = 0; i < sups.length; i++) {
                        if (!sups[i].from.synchronizeStatus())
                            break;
                    }
                    self.master.changeTaskDates(task, task.start, task.end); // fake change to force date recomputation from dependencies
                }
            } else if (field == "duration") {
                var dur = task.duration;
                dur = parseInt(el.val()) || 1;
                el.val(dur);
                var newEnd = computeEndByDuration(task.start, dur);
                self.master.changeTaskDates(task, task.start, newEnd);
            } else if (field == "name" && el.val() == "") { // remove unfilled task
                task.deleteTask();
            } else {
                task[field] = el.val();
            }
            self.master.endTransaction();
        }
    });

    //cursor key movement
    taskRow.find("input").keydown(function (event) {
        var theCell = $(this);
        var theTd = theCell.parent();
        var theRow = theTd.parent();
        var col = theTd.prevAll("td").size();

        var ret = true;
        switch (event.keyCode) {
            case 37: //left arrow
                if (this.selectionEnd == 0)
                    theTd.prev().find("input").focus();
                break;
            case 39: //right arrow
                if (this.selectionEnd == this.value.length)
                    theTd.next().find("input").focus();
                break;

            case 38: //up arrow
                var prevRow = theRow.prev();
                var td = prevRow.find("td").eq(col);
                var inp = td.find("input");

                if (inp.size() > 0)
                    inp.focus();
                break;
            case 40: //down arrow
                var nextRow = theRow.next();
                var td = nextRow.find("td").eq(col);
                var inp = td.find("input");
                if (inp.size() > 0)
                    inp.focus();
                else
                    nextRow.click(); //create a new row
                break;
            case 36: //home
                break;
            case 35: //end
                break;

            case 9: //tab
            case 13: //enter
                break;
        }
        return ret;
    }).focus(function () {
        $(this).closest("tr").click();
    });

    //change status
    taskRow.find(".taskStatus").click(function () {
        var el = $(this);
        var tr = el.closest("[taskId]");
        var taskId = tr.attr("taskId");
        var task = self.master.getTask(taskId);

        var changer = $.JST.createFromTemplate({}, "CHANGE_STATUS");
        changer.find("[status=" + task.status + "]").addClass("selected");
        changer.find(".taskStatus").click(function (e) {
            e.stopPropagation();
            var newStatus = $(this).attr("status");
            changer.remove();
            self.master.beginTransaction();
            task.changeStatus(newStatus);
            self.master.endTransaction();
            el.attr("status", task.status);
        });
        el.oneTime(3000, "hideChanger", function () {
            changer.remove();
        });
        el.after(changer);
    });

    //bind row selection
    taskRow.click(function () {
        var row = $(this);
        //var isSel = row.hasClass("rowSelected");
        row.closest("table").find(".rowSelected").removeClass("rowSelected");
        row.addClass("rowSelected");

        //set current task
        self.master.currentTask = self.master.getTask(row.attr("taskId"));

        //move highlighter
        self.master.gantt.synchHighlight();

        //if offscreen scroll to element
        var top = row.position().top;
        if (top > self.element.parent().height()) {
            row.offsetParent().scrollTop(top - self.element.parent().height() + 100);
        } else if (top < 40) {
            row.offsetParent().scrollTop(row.offsetParent().scrollTop() - 40 + top);
        }
    });
};

GridEditor.prototype.openFullEditor = function (task, taskRow) {
    var self = this;

    //task editor in popup
    var taskId = taskRow.attr("taskId");
    //console.debug(task);

    //make task editor
    var taskEditor = $.JST.createFromTemplate({}, "TASK_EDITOR");

    taskEditor.find("#name").val(task.name);
    taskEditor.find("#description").val(task.description);
    taskEditor.find("#code").val(task.code);
    taskEditor.find("#progress").val(task.progress ? parseFloat(task.progress) : 0);
    taskEditor.find("#status").attr("status", task.status);

    if (task.startIsMilestone)
        taskEditor.find("#startIsMilestone").attr("checked", true);
    if (task.endIsMilestone)
        taskEditor.find("#endIsMilestone").attr("checked", true);

    taskEditor.find("#duration").val(task.duration);
    var startDate = taskEditor.find("#start");
    startDate.val(new Date(task.start).format());
    //start is readonly in case of deps
    if (task.depends) {
        startDate.attr("readonly", "true");
    } else {
        startDate.removeAttr("readonly");
    }

    taskEditor.find("#end").val(new Date(task.end).format());

    //taskEditor.find("[name=depends]").val(task.depends);

    //make assignments table
    var assigsTable = taskEditor.find("#assigsTable");
    assigsTable.find("[assigId]").remove();
    // loop on already assigned resources
    for (var i = 0; i < task.assigs.length; i++) {
        var assig = task.assigs[i];
        var assigRow = $.JST.createFromTemplate({ task: task, assig: assig }, "ASSIGNMENT_ROW");
        assigsTable.append(assigRow);
    }

    //define start end callbacks
    function startChangeCallback(date) {
        var dur = parseInt(taskEditor.find("#duration").val());
        date.clearTime();
        taskEditor.find("#end").val(new Date(computeEndByDuration(date.getTime(), dur)).format());
    }

    function endChangeCallback(end) {
        var start = Date.parseString(taskEditor.find("#start").val());
        end.setHours(23, 59, 59, 999);

        if (end.getTime() < start.getTime()) {
            var dur = parseInt(taskEditor.find("#duration").val());
            start = incrementDateByWorkingDays(end.getTime(), -dur);
            taskEditor.find("#start").val(new Date(computeStart(start)).format());
        } else {
            taskEditor.find("#duration").val(recomputeDuration(start.getTime(), end.getTime()));
        }
    }

    if (!self.master.canWrite || !task.canWrite) {
        taskEditor.find("input,textarea").attr("readOnly", true);
        taskEditor.find("input:checkbox,select").attr("disabled", true);
    } else {
        //bind dateField on dates
        taskEditor.find("#start").click(function () {
            $(this).dateField({
                inputField: $(this),
                callback: startChangeCallback
            });
        }).blur(function () {
            var inp = $(this);
            if (!Date.isValid(inp.val())) {
                alert(GanttMaster.messages["INVALID_DATE_FORMAT"]);
                inp.val(inp.getOldValue());
            } else {
                startChangeCallback(Date.parseString(inp.val()))
            }
        });

        //bind dateField on dates
        taskEditor.find("#end").click(function () {
            $(this).dateField({
                inputField: $(this),
                callback: endChangeCallback
            });
        }).blur(function () {
            var inp = $(this);
            if (!Date.isValid(inp.val())) {
                alert(GanttMaster.messages["INVALID_DATE_FORMAT"]);
                inp.val(inp.getOldValue());
            } else {
                endChangeCallback(Date.parseString(inp.val()))
            }
        });

        //bind blur on duration
        taskEditor.find("#duration").change(function () {
            var start = Date.parseString(taskEditor.find("#start").val());
            var el = $(this);
            var dur = parseInt(el.val());
            dur = dur <= 0 ? 1 : dur;
            el.val(dur);
            taskEditor.find("#end").val(new Date(computeEndByDuration(start.getTime(), dur)).format());
        });

        //bind add assignment
        taskEditor.find("#addAssig").click(function () {
            var assigsTable = taskEditor.find("#assigsTable");
            var assigRow = $.JST.createFromTemplate({ task: task, assig: { id: "tmp_" + new Date().getTime() } }, "ASSIGNMENT_ROW");
            assigsTable.append(assigRow);
        });

        taskEditor.find("#status").click(function () {
            var tskStatusChooser = $(this);
            var changer = $.JST.createFromTemplate({}, "CHANGE_STATUS");
            changer.find("[status=" + task.status + "]").addClass("selected");
            changer.find(".taskStatus").click(function (e) {
                e.stopPropagation();
                tskStatusChooser.attr("status", $(this).attr("status"));
                changer.remove();
            });
            tskStatusChooser.oneTime(3000, "hideChanger", function () {
                changer.remove();
            });
            tskStatusChooser.after(changer);
        });

        //save task
        taskEditor.find("#saveButton").click(function () {
            var task = self.master.getTask(taskId); // get task again because in case of rollback old task is lost

            self.master.beginTransaction();
            task.name = taskEditor.find("#name").val();
            task.description = taskEditor.find("#description").val();
            task.code = taskEditor.find("#code").val();
            task.progress = parseFloat(taskEditor.find("#progress").val());
            task.duration = parseInt(taskEditor.find("#duration").val());
            task.startIsMilestone = taskEditor.find("#startIsMilestone").is(":checked");
            task.endIsMilestone = taskEditor.find("#endIsMilestone").is(":checked");

            //set assignments
            taskEditor.find("tr[assigId]").each(function () {
                var trAss = $(this);
                var assId = trAss.attr("assigId");
                var resId = trAss.find("[name=resourceId]").val();
                var roleId = trAss.find("[name=roleId]").val();
                var effort = millisFromString(trAss.find("[name=effort]").val());

                //check if an existing assig has been deleted and re-created with the same values
                var found = false;
                for (var i = 0; i < task.assigs.length; i++) {
                    var ass = task.assigs[i];

                    if (assId == ass.id) {
                        ass.effort = effort;
                        ass.roleId = roleId;
                        ass.resourceId = resId;
                        ass.touched = true;
                        found = true;
                        break;
                    } else if (roleId == ass.roleId && resId == ass.resourceId) {
                        ass.effort = effort;
                        ass.touched = true;
                        found = true;
                        break;
                    }
                }

                if (!found) { //insert
                    var ass = task.createAssignment("tmp_" + new Date().getTime(), resId, roleId, effort);
                    ass.touched = true;
                }
            });

            //remove untouched assigs
            task.assigs = task.assigs.filter(function (ass) {
                var ret = ass.touched;
                delete ass.touched;
                return ret;
            });

            //change dates
            task.setPeriod(Date.parseString(taskEditor.find("#start").val()).getTime(), Date.parseString(taskEditor.find("#end").val()).getTime() + (3600000 * 24));

            //change status
            task.changeStatus(taskEditor.find("#status").attr("status"));

            if (self.master.endTransaction()) {
                $("#__blackpopup__").trigger("close");
            }
        });
    }

    var ndo = createBlackPage(800, 500).append(taskEditor);
};